桔青霉诱导子对红豆杉培养细胞中紫杉醇生物合成的影响

在红豆杉培养红胞中，桔青霉诱导子促进紫杉醇的合成。将培养６－７ｄ的桔青霉菌丝体的粗提物，以５０μｇ碳水化合物／ｍｌ培养液的浓度加入到处于指数生长期末期的红豆杉培养细胞中，诱导子促进紫杉醇合成的作用最大。高压灭菌处理２０－９０ｍｉｎ，不影响诱导子的活性

桔青霉诱导子对红豆杉培养细胞中紫杉醇生物合成的影响

在红豆杉培养红胞中，桔青霉诱导子促进紫杉醇的合成。将培养６—７ｄ的桔青霉菌丝体的粗提物，以５０μｇ碳水化合物／ｍｌ培养液的浓度加入到处于指数生长期末期的红豆杉培养细胞中，诱导子促进紫杉醇合成的作用最大。高压灭菌处理２０—９０ｍｉｎ，不影响诱导子的活性

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies